杨国梁:广东罗氏沼虾年产量达74874吨居全国首位,种业瓶颈是未来突破的方向
11月24日,2023水产种业高质量发展论坛在广州举办。氏沼江苏数丰水产种业有限公司(以下简称“数丰水产”)董事长杨国梁作《培育沼虾良种 致富一方虾农》精彩报告。虾年
江苏数丰水产种业有限公司董事长杨国梁
杨国梁介绍,罗氏沼虾原产于南亚、居全颈东南亚、国首大洋洲北部和西太平洋岛屿,位种是突破世界上最大的淡水虾,在东南亚的杨国业瓶一些天然水域里,雄虾长达40厘米,梁广重600多克;雌虾长25厘米,东罗达吨的方重200克。氏沼
1976年,虾年我国从日本引进罗氏沼虾,罗氏沼虾养殖从南方沿海省份逐步向北方及内陆地区扩展,目前主要分布于江苏、广东和浙江三个经济强省。
据统计,2022年中国罗氏沼虾养殖产量近18万吨,占全球产量的60%,其中广东养殖产量达74874吨,居全国首位。
广东罗氏沼虾产量实现量的飞跃,但产业发展也存在瓶颈。广东良种虾苗主要靠省外供应,难以满足产业发展需求,同时,与良种相配套的养殖良法尚未转型升级。
“育种是一个系统工程,涉及育种、养殖、营养和病害等,需要联合各学科的科研人员进行攻关。”杨国梁表示,为了做好基础研究,数丰水产与湖州师范学院、中国水科院黄海所、中国科学院海洋所、集美大学、华中农业大学等科研院所建立紧密合作,开展新品种选育,建设罗氏沼虾种质资源库。
值得一提的是,罗氏沼虾“数丰1号”新品种选育采用规模化家系选育技术路线,以收获体重为育种目标性状,利用最佳线性无偏预测(BLUP)法估计其育种值,利用优化贡献选择(OCS)方法进行配种,经连续选育4代而成。与“南太湖2号”相比,120日龄体重增长提高18%,具有较为显著的生长和产量优势。
针对广东罗氏沼虾发展瓶颈,杨国梁提出3项建议。
首先,广东只有实现良种虾苗本土化生产,才能推动产业高质量发展。数丰水产今后的目标也是在广东开展良种扩繁。
其次,通过增加良种虾苗养殖示范户,提升带动虾农整体的养殖产量。
再者,罗氏沼虾产业必须走精深加工路线。谋划罗氏沼虾加工产业,可以给养殖户的商品虾价托底。今年5月,广东棚虾的价格达75元/斤,居于历史高位,但到10月便跌至20元/斤以下,这说明产业发展不能单靠活虾养殖,还需要延长产业链条,实现精深加工。
【记者】刘鑫
【来源】南方农村报
(责任编辑:新闻中心)
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